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[A] : The obligate parasites can live on...

[A] : The obligate parasites can live only on dead hosts .
[R] : There are some organisms which grow and live together but each one is always harmed by the other . This phenomenon is known as antagonism .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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(Street plan): A city has two main roads which cross each other at the centre of the city. These two roads are along the North-South direction and East_West direction. All the other streets of the city run parallel to these roads and are 200m apart. There are 5 streets in each direaction. Using 1 cm =200cm, draw a model of teh city on your note book. Represent the roads/streets by single lines. There are many cross-streets in your model. A particular cross-street is made by two streets, one running in the North-South directin and another in the East-West direction. Each cross street is rreferred to in the following manner, If the 2 ^(nd) steeet running in teh North-South direction 5 ^(th) in the East-West direction meet at some crossing, then we will call this cross-street (2,5). Using this convection, find: How many cross-streets can be referred at as (4,3)

(Street plan): A city has two main roads which cross each other at the centre of the city. These two roads are along the North-South direction and East_West direction. All the other streets of the city run parallel to these roads and are 200m apart. There are 5 streets in each direaction. Using 1 cm =200cm, draw a model of teh city on your note book. Represent the roads/streets by single lines. There are many cross-streets in your model. A particular cross-street is made by two streets, one running in the North-South directin and another in the East-West direction. Each cross street is rreferred to in the following manner, If the 2 ^(nd) steeet running in teh North-South direction 5 ^(th) in the East-West direction meet at some crossing, then we will call this cross-street (2,5). Using this convection, find: How many cross-streets can be referred to as (3,4)

Two pipes running together can fill a cistren in 3(1)/(13) minutes . If one pipe takes 3 minutes more than the other to fill it find the time in which each pipe would fill cistern.

TRUEMAN BIOLOGY-Fungi -ASSERTION AND REASON
  1. [A] : Lichens are of considerable ecological imporance as pioneers in ...

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  2. [A] : Bordeaux mixture is an organic fungicide . [R] : Bordeaux mixt...

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  3. [A] : The obligate parasites can live only on dead hosts . [R] : The...

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  4. [A] : Disease reduce the vitality of plants , inhibit their developmen...

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  5. [A] : Lichens are composite organisms . [R] : The fungal component i...

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  6. [A] : Candida is a false yeast . [R] : It lacks ascus formation .

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  7. Yeast belongs to kingdom

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  8. [A] : Heterotrophs may be free living or symbiotic . [R] : They from...

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  9. [A] : Rusts and smuts are club fungi that parasitize cereal crops . ...

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  10. Assertion : The fungi are widespread in distribution and they even liv...

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  11. [A] : Symbiosis is also furnished by mycorrhiza . [R] : In Mycorrhiz...

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  12. [A] : Phytoalexins are formed as a result of fusion between auxins and...

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  13. [A] : Zygospore fungi produce spores within sporangia . [R] : During...

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  14. [A] : Club fungi reproduce sexually . [R] : In club fungi , dikaryot...

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  15. [A] : The sterile portion of sporangium in Mucor is called columella ....

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  16. [A] : Fungi are thallophyta . [R] : Cell wall of fungi is made up of...

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  17. [A] : Fungi are either saprobes or parasitic . [R] : Fungi posses ha...

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  18. [A] : Aspergillus is used as bioindicaor . [R] : Aspergillus niger i...

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  19. [A] : Rhizopus contains two types of hyphae . [R] : The unbranched h...

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  20. [A] : Puccinia graminis is autoecious . [R] : It complete its life c...

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